Why 98% Collections Still Leaves $60K on the Table
A practice running 98% collections on $1.25 million of production is quietly losing about $60,000 a year, and the ratio itself is the reason nobody goes looking for it. That is roughly 28% of the $215,320 the average general dentist earned in 2025, according to ADA Health Policy Institute data on dentist income and revenue, sitting in four places a collection report is structurally incapable of showing you.
Here is our view, and plenty of owners will argue with it: the collection ratio is the most over-trusted number in dentistry, and a practice reporting 98% is more likely to be mismeasuring than winning. Not always. But the number is computed from a denominator the practice controls, by the same software that shrinks that denominator every time a claim is adjudicated. A 98% collection ratio tells you how good your write-offs are at hiding, not how good your practice is at collecting.
98% of What, Exactly?
Almost every practice management system reports net collection ratio: collections divided by net production, where net production is gross production minus contractual adjustments. Pearly's accounts receivable benchmarking puts the target at 98%, with 95% to 99% rated as good. That is the right target for that metric. The problem is what the metric excludes by design.
Adjustments are not a fact of nature. They are a number your front office types, or that your software computes from fee schedules somebody loaded into it, possibly in 2019, possibly for a plan you no longer participate in at those rates. Every dollar of unnecessary adjustment shrinks the denominator, which raises the ratio. A practice that writes off aggressively and collects whatever is left will post a beautiful 98%. A practice that bills correctly, fights denials, and carries a working accounts receivable balance will post 96% and bank more money.
Then there is timing. The ratio is a period measure. Money still sitting in receivables counts as production that has not failed yet. It fails next quarter, in somebody else's report, after the credit has already been taken.
The Mistake: Auditing the Ratio and Never the Denominator
The specific error we see most often is owners of one-to-three-location PPO practices treating the collection ratio as an independent audit of the billing function when it is a derived output of that same function. The office manager produces the ratio from the system that computes the adjustments. Nobody outside the loop ever checks the adjustments. The owner sees 98% on the morning huddle sheet, concludes collections are solved, and redirects attention to new patient count.
Two variants make it worse. The first is the acquired practice, where fee schedules, plan assignments, and write-off habits were inherited from the seller and never re-verified. The second is the practice that hired an outside billing service and now measures it on the one number the service also controls. In both cases the ratio is high, the adjustment line is unexamined, and the aging report is printed monthly and read never.
Our call: a collection ratio reported without the gross collection ratio beside it, and without the aging buckets beside both, is not a performance metric. It is a comfort object.
Where the $60,020 Hides at a $1.25M Practice
Take a general practice doing $1.25 million in gross production, with $250,000 in contractual adjustments, so $1 million in net production. It collects $980,000. The dashboard says 98%. Here is the stack.
The visible 2%. Net production of $1 million against $980,000 collected leaves $20,000 that simply never arrived. Most owners know this piece exists and have decided it is the cost of doing business.
Over-adjustment. Stale fee schedules on two of nine PPO plans, non-covered services written off instead of billed to the patient, and courtesy discounts nobody authorized. Assume 5% of the $250,000 adjustment line was never contractually required: that is $12,500. This dollar is invisible to the collection ratio by construction, because it lowered the denominator before the ratio was calculated.
Claims that died on arrival. Missing attachments, blown timely-filing windows, procedures completed but never posted, clearinghouse rejections that sat in a queue. At 1.2% of gross production that is $15,000. Some of this never enters production at all, which means it never enters the ratio either.
Aged receivables that will not convert. Say accounts receivable sits at $95,000 with $14,000 over 90 days. Pearly's benchmark is that only $3,000 of a $100,000 balance should be over 90 days, and that balances past 90 days are typically just 15% to 25% collectible. Write off 80% of that $14,000 and you lose $11,200. It is still sitting on the books today looking like an asset.
Abandoned patient balances. 120 accounts averaging $78, mostly under the threshold where anybody picks up a phone, is $9,360 of exposure; collect a quarter of it and $7,020 walks.
Stack them: $20,000 plus $12,500 plus $15,000 plus $11,200 plus $7,020 is $65,720. Some of those dead claims will eventually show up inside the 2% and inside the aging write-off, so subtract roughly $5,700 of overlap and you land at $60,020. The ratio showed you $20,000 of it. The other two thirds were never in the frame.
We are deliberately leaving out unscheduled diagnosed treatment, which at most practices is a bigger number than all five of these combined. That is a production problem, not a collections problem, and mixing them is how owners end up fixing neither.
Two Points Cost More Than They Did in 2015
A 2% gap used to be rounding. It is not anymore, because the margin it comes out of has been compressing for a decade. ADA News, reporting HPI survey results, found practice revenues up 2.2% over a ten-year span while practice expenses rose 7.7%, with general dentist net income in private practice falling 7% in 2022 alone. The five-year picture in the ADA's income and revenue trend data is the same shape: revenues up 1.4%, expenses up 4.9%.
The compounding is the part owners underrate. Dental Economics, citing the same ADA HPI study, reports general practitioner net income down 13.2% (from $230,353 to $200,000 on average) between the 2015 to 2019 and 2020 to 2024 periods, on revenue that fell only 1.2% while expenses rose 3%. A 1.2% revenue move turned into a 13.2% income move. That is what a fixed cost base does to leakage. Your $60,020 is not 4.8% of production, it is 28% of take-home.
And the upside math is already well documented: moving a practice from 93% to 98% on $1 million of production is worth about $50,000 a year, as we laid out in our benchmark piece on collections as a percentage of production, where industry average runs 95% to 97% against the ADA's stated expectation of 100% net-to-net. The practice already at 98% assumes that playbook is closed to them. It is not. The remaining money just sits outside the ratio.
Aging Is a Clock, Not a Report
The single highest-yield page in your software is the aging report, and it is the one most owners glance at and close. The benchmarks are specific: no more than 10% of accounts receivable over 60 days past due, and only $3,000 of a $100,000 balance over 90 days, per Pearly's AR benchmarking. Past 90 days, collectibility drops to 15% to 25%.
Read that as a decay curve, not a compliance test. Every dollar that crosses 90 days loses about 80 cents of value, permanently, and the loss does not show up until somebody finally writes it off, which is usually at year end, in a lump, attributed to "insurance." A practice with $14,000 over 90 days is not carrying $14,000. It is carrying about $2,800 and a $11,200 bill that has not been delivered yet.
We would re-cut the aging report by payer and by responsible party, weekly, and set a hard rule: nothing crosses 45 days without a documented touch. Not a statement. A touch.
What the Asking Side of the Market Tells You About Scale
Across the Practice Market Index, our dataset built from 1,038 dental practices currently listed for sale, median collections run $1,000,000 (middle half $659,630 to $1,500,000, n=852), and median collections per operatory run $200,639 (middle half $147,250 to $266,667, n=730). For general practices specifically, median collections are $957,588 (n=729). These describe practices on the market, the asking side, not practices generally. But the scale is instructive: a 2-point collection gap at that per-operatory figure is $4,013 per chair per year , and the full leak stack above runs closer to $12,000 per chair at a five-operatory practice.
That is one hygiene day a week of equivalent value, recoverable with no new patients, no new equipment, and no new chair time. We would spend two weeks on the adjustment audit before spending a dollar on marketing.
Five Pulls for This Week
Pull the gross collection ratio and the net collection ratio side by side for the last 12 months, and pull the adjustment line as a percentage of gross production month by month: any month that jumps 2 points is a fee schedule or a posting habit, not a payer. Then pull your three largest PPO fee schedules and verify them against the current contracted rates, line by line, on your top 25 codes. Pull the aging report cut by payer and run every balance over 60 days through a named owner with a due date. Last, pull every claim submitted in the past 90 days with no adjudication and no follow-up note, because that is where the timely-filing losses live.
Most of what we described comes out of the write-off line, and the write-off line is mostly a function of which plans you are in and at what rates. If you want to see what your PPO mix is actually costing you in adjustments before you touch the aging report, run your own numbers through our PPO-exit calculator: it will show you the write-off load per plan and what dropping or renegotiating one of them does to collections, which is the first question the $12,500 over-adjustment bucket raises.
What we are watching next: whether the practices posting 98% in a tightening expense environment are the ones with clean fee schedules or the ones with aggressive write-off habits. We suspect the second group is larger, and we are building the adjustment-line data to find out. What would change our mind is evidence that modern practice management defaults now load and update contracted rates reliably enough that the over-adjustment bucket is closer to 1% than 5%. If that is true at your practice, the number you should be chasing is different, and we would like to see your aging report.
